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From: Jeff Hostetler <git@jeffhostetler.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Jeff Hostetler via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, Jeff Hostetler <jeffhost@microsoft.com>
Subject: Re: [PATCH 9/9] trace2: add global counters
Date: Wed, 22 Dec 2021 17:18:35 -0500	[thread overview]
Message-ID: <db155798-eb74-1ddf-d932-1243e76bd2ae@jeffhostetler.com> (raw)
In-Reply-To: <211220.868rwfur46.gmgdl@evledraar.gmail.com>



On 12/20/21 12:14 PM, Ævar Arnfjörð Bjarmason wrote:
> 
> On Mon, Dec 20 2021, Jeff Hostetler via GitGitGadget wrote:
> 
>> From: Jeff Hostetler <jeffhost@microsoft.com>
>> [...]

>> +	int nr_threads = 0;
>> +	int k;
>> +	pthread_t *pids = NULL;
>> +
>> +	if (argc != 3)
>> +		die("%s", usage_error);
>> +	if (get_i(&data.v1, argv[0]))
>> +		die("%s", usage_error);
>> +	if (get_i(&data.v2, argv[1]))
>> +		die("%s", usage_error);
>> +	if (get_i(&nr_threads, argv[2]))
>> +		die("%s", usage_error);
> 
> A partial nit on existing code, as this just extends the pattern, but
> couldn't much of this get_i() etc. just be made redundant by simply
> using the parse-options.c API here?  I.e. OPTION_INTEGER and using named
> arguments would do the validation or you.

I suppose.  It just seemed like a little overkill setting things
up for such a simple and isolated test.  And the cut-n-paste was
quick enough for my purposes.

> 
>> +# Exercise the global counter in a loop and confirm that we get the
>> +# expected sum in an event record.
>> +#
>> +
>> +have_counter_event () {
>> +	thread=$1
>> +	name=$2
>> +	value=$3
>> +	file=$4
>> +
>> +	grep "\"event\":\"counter\".*\"thread\":\"${thread}\".*\"name\":\"${name}\".*\"value\":${value}" $file
>> +
>> +	return $?
>> +}
> 
> It looks like there's no helper, but this is the Nth thing I see where
> wish our "test_region" helper were just a bit more generalized. I.e.:
> 
>      test_trace2 --match=counter --match=thread=$thread --match=name=$name --match=value=$value <trace>
> 
> With test_region just being a wrapper for something like:
> 
>      test_trace2 --match=region_enter --match=category=$category --match=label=$label <trace> &&
>      test_trace2 --match=region_leave --match=category=$category --match=label=$label <trace>

Yes, that would be nice.  But I don't think we should
start that in the middle of this patch series.  Perhaps
you could start a top-level message with a fleshed out
proposal and let everyone discuss it.

> 
>> +static void tr2main_emit_summary_counters(uint64_t us_elapsed_absolute)
>> +{
>> +	struct tr2_tgt *tgt_j;
>> +	int j;
>> +	struct tr2ctr_block merged;
>> +
>> +	memset(&merged, 0, sizeof(merged));
> 
> nit: more memset v.s. "{ 0 }".

Yeah, but lldb wouldn't stop complaining until it was "= { { { 0 } } }"

Jeff


  reply	other threads:[~2021-12-22 22:18 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-20 15:01 [PATCH 0/9] Trace2 stopwatch timers and global counters Jeff Hostetler via GitGitGadget
2021-12-20 15:01 ` [PATCH 1/9] trace2: use size_t alloc,nr_open_regions in tr2tls_thread_ctx Jeff Hostetler via GitGitGadget
2021-12-20 15:01 ` [PATCH 2/9] trace2: convert tr2tls_thread_ctx.thread_name from strbuf to char* Jeff Hostetler via GitGitGadget
2021-12-20 16:31   ` Ævar Arnfjörð Bjarmason
2021-12-20 19:07     ` Jeff Hostetler
2021-12-20 19:35       ` Ævar Arnfjörð Bjarmason
2021-12-22 16:32         ` Jeff Hostetler
2021-12-21  7:33     ` Junio C Hamano
2021-12-21  7:22   ` Junio C Hamano
2021-12-22 16:28     ` Jeff Hostetler
2021-12-22 19:57       ` Junio C Hamano
2021-12-20 15:01 ` [PATCH 3/9] trace2: defer free of TLS CTX until program exit Jeff Hostetler via GitGitGadget
2021-12-21  7:30   ` Junio C Hamano
2021-12-22 21:59     ` Jeff Hostetler
2021-12-22 22:56       ` Junio C Hamano
2021-12-22 23:04         ` Jeff Hostetler
2021-12-23  7:38         ` Johannes Sixt
2021-12-23 18:18           ` Junio C Hamano
2021-12-27 18:51             ` Jeff Hostetler
2021-12-20 15:01 ` [PATCH 4/9] trace2: add thread-name override to event target Jeff Hostetler via GitGitGadget
2021-12-20 15:01 ` [PATCH 5/9] trace2: add thread-name override to perf target Jeff Hostetler via GitGitGadget
2021-12-20 15:01 ` [PATCH 6/9] trace2: add timer events to perf and event target formats Jeff Hostetler via GitGitGadget
2021-12-20 16:39   ` Ævar Arnfjörð Bjarmason
2021-12-20 19:44     ` Jeff Hostetler
2021-12-21 14:20   ` Derrick Stolee
2021-12-20 15:01 ` [PATCH 7/9] trace2: add stopwatch timers Jeff Hostetler via GitGitGadget
2021-12-20 16:42   ` Ævar Arnfjörð Bjarmason
2021-12-22 21:38     ` Jeff Hostetler
2021-12-21 14:45   ` Derrick Stolee
2021-12-22 21:57     ` Jeff Hostetler
2021-12-20 15:01 ` [PATCH 8/9] trace2: add counter events to perf and event target formats Jeff Hostetler via GitGitGadget
2021-12-20 16:51   ` Ævar Arnfjörð Bjarmason
2021-12-22 22:56     ` Jeff Hostetler
2021-12-20 15:01 ` [PATCH 9/9] trace2: add global counters Jeff Hostetler via GitGitGadget
2021-12-20 17:14   ` Ævar Arnfjörð Bjarmason
2021-12-22 22:18     ` Jeff Hostetler [this message]
2021-12-21 14:51 ` [PATCH 0/9] Trace2 stopwatch timers and " Derrick Stolee
2021-12-21 23:27   ` Matheus Tavares
2021-12-28 19:36 ` [PATCH v2 " Jeff Hostetler via GitGitGadget
2021-12-28 19:36   ` [PATCH v2 1/9] trace2: use size_t alloc,nr_open_regions in tr2tls_thread_ctx Jeff Hostetler via GitGitGadget
2021-12-29  0:48     ` Ævar Arnfjörð Bjarmason
2021-12-28 19:36   ` [PATCH v2 2/9] trace2: convert tr2tls_thread_ctx.thread_name from strbuf to flex array Jeff Hostetler via GitGitGadget
2021-12-29  1:11     ` Ævar Arnfjörð Bjarmason
2021-12-29 16:46       ` Jeff Hostetler
2021-12-28 19:36   ` [PATCH v2 3/9] trace2: defer free of thread local storage until program exit Jeff Hostetler via GitGitGadget
2021-12-28 19:36   ` [PATCH v2 4/9] trace2: add thread-name override to event target Jeff Hostetler via GitGitGadget
2021-12-28 19:36   ` [PATCH v2 5/9] trace2: add thread-name override to perf target Jeff Hostetler via GitGitGadget
2021-12-29  1:48     ` Ævar Arnfjörð Bjarmason
2021-12-29 17:15       ` Jeff Hostetler
2021-12-28 19:36   ` [PATCH v2 6/9] trace2: add timer events to perf and event target formats Jeff Hostetler via GitGitGadget
2021-12-28 19:36   ` [PATCH v2 7/9] trace2: add stopwatch timers Jeff Hostetler via GitGitGadget
2021-12-28 19:36   ` [PATCH v2 8/9] trace2: add counter events to perf and event target formats Jeff Hostetler via GitGitGadget
2021-12-28 19:36   ` [PATCH v2 9/9] trace2: add global counters Jeff Hostetler via GitGitGadget
2021-12-29  1:54   ` [PATCH v2 0/9] Trace2 stopwatch timers and " Ævar Arnfjörð Bjarmason
2021-12-30 16:42     ` Jeff Hostetler

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